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spapr: fix check of cpu alias name in spapr_get_cpu_core_type() 

If the user passes an alias name and a property to -cpu, QEMU fails to
find the CPU definition and exits.

$ qemu-system-ppc64 -cpu POWER8E,compat=power7
qemu-system-ppc64: Unable to find sPAPR CPU Core definition

This happens because spapr_get_cpu_core_type() passes the full string from
the command line (i.e. "POWER8E,compat=power7") to ppc_cpu_lookup_alias(),
instead of the alias name piece only (i.e. "POWER8E").

The fix is to pass model_pieces[0] to ppc_cpu_lookup_alias().

Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Greg Kurz 2016-10-03 14:13:20 +02:00 committed by David Gibson
parent aa9026fd5e
commit e17a87792d
1 changed files with 4 additions and 4 deletions
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8
hw/ppc/spapr_cpu_core.c
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@ -92,20 +92,20 @@ char *spapr_get_cpu_core_type(const char *model)
gchar **model_pieces = g_strsplit(model, ",", 2);
core_type = g_strdup_printf("%s-%s", model_pieces[0], TYPE_SPAPR_CPU_CORE);
g_strfreev(model_pieces);
/* Check whether it exists or whether we have to look up an alias name */
if (!object_class_by_name(core_type)) {
const char *realmodel;
g_free(core_type);
realmodel = ppc_cpu_lookup_alias(model);
core_type = NULL;
realmodel = ppc_cpu_lookup_alias(model_pieces[0]);
if (realmodel) {
return spapr_get_cpu_core_type(realmodel);
core_type = spapr_get_cpu_core_type(realmodel);
}
return NULL;
}
g_strfreev(model_pieces);
return core_type;
}